250 Portable Cooler / Dryer

This 19” rack mounted cooler dryer has up to three independent channels and is supplied complete with temperature and condensate alarms. The cooled and dried outlet sample is directed to the gas analyser.

Price on Quotation

Additional Information

The Signal Group 250 Portable cooler dryer removes water vapour from stack and exhaust emission gases, before analysis by ambient analysers. Errors due to water interference are removed and condensation is prevented from occurring inside the analyser.

The 250 features a semiconductor Peltier cooling system with an aluminium cooling block. Fitted into the block is then a high efficiency heat exchanger made of stainless steel. The condensed water is then removed using a continuous peristaltic pump.

The status of the cooler is indicated by an LED system with high temperature alarm, a water alarm and an indicator that the set temperature is being maintained.


  • Agricultural emissions monitoring
  • Automotive, Biogas
  • Biomass combustion monitoring
  • Boiler and Combustion Performance
  • Boiler/stove emissions compliance
  • Carbon capture and storage (CCS)
  • Catalyst Research
  • Combustion emissions monitoring
  • Combustion research
  • Continuous emissions monitoring (CEM)
  • Controlled atmosphere storage
  • Direct Reduction Iron (DRI) process emission monitoring
  • Engine Exhaust
  • Ethylene production
  • Fermentation monitoring
  • Flue gas emissions monitoring
  • Fuel cell analysis
  • Gas purity
  • Gas turbine exhaust emissions
  • Greenhouse gas (GHG) measurement
  • Landfill
  • Medical gas purity
  • Mining
  • Modified atmosphere packaging (MAP)
  • Process control
  • Process Emission Monitoring
  • Safety monitoring
  • Specialist Research
  • Stack testing
  • Tobacco Testing
  • Toxic Gas Measurement
  • Vehicle emissions


➔ Ancillary Equipment Brochure

➔ Datasheet

➔ User Manual

Technical Specification

CONFIGURATION: Single channel

INLET: Maximum inlet temperature: 210oC

dewpoint 5oC ± 0.5oC

Hot air:
exhausted to ambient

pumped to drain

FLOW RATE: 3 l/min (maximum)

Gas sample(s): 1/4” tube fittings
Condensate drain: 1/4” stainless steel

POWER: Voltage rating: 115 Vac or 230 Vac. Consumption: 180VA maximum

ENVIRONMENT: Ambient temperature: + 5oC to 35oC. Max Humidity: 95% RH non-condensing

Mains power on/off switch
Each channel has the following LED indicators:
• Status (green)
• High temperature alarm (red)
• Low temperature alarm (red)
• Water alarm (red)
• Power (green)

High temperature.
Low temperature
Water condensate present

DIMENSIONS: 630mm x 500mm x 400mm

WEIGHT: 15kg